Question: An engine develops 10 𝑘𝑊 of power. How much time will it take to lift a mass of 200 𝑘𝑔 to a height of 40 𝑚 (𝑔 = 10 𝑚/𝑠𝑒𝑐2)
(A) 4 𝑠𝑒𝑐
(B) 5 𝑠𝑒𝑐
(C) 8 𝑠𝑒𝑐
(D) 10 𝑠𝑒𝑐
Answer: Option (C)
Solution:
An engine develops 10 𝑘𝑊 of power. How much time will it take to lift a mass of 200 𝑘𝑔 to a height of 40 𝑚 (𝑔 = 10 𝑚/𝑠𝑒𝑐2)
with
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